[expand title="Fiction" rel="fiction"]
  [expandsub2 title="Star Wars" rel="submenu-highlander"]Target Content[/expandsub2]</br>
  [expandsub2 title="Star Trek" rel="submenu-highlander"]Target Content[/expandsub2]</br>
  [expandsub2 title="Battlestar Galactica" rel="submenu-highlander"]Target Content[/expandsub2]
[/expand]
<br>
[expand title="History" rel="history"]
  [expandsub2 title="Space Race"]
    [expandsub3 title="Moon Landing"]Target Content[/expandsub3]
  [/expandsub2]
  [expandsub2 title="Ansari X Prize"]Target Content[/expandsub2]
[/expand]